Kramer Electronics VP-790 - Manual (Page 14)

12 VP-790 Blending Images - Setting the 4-Corner Warp
Figure 11: The 4-corner Menu
3. Select a corner, for example Top Left
The following window appears:
Figure 12: Adjusting the Location of the Top Left Corner
The Diagonal Projection menu allows you to adjust the position of the X and Y co-
ordinates of the corners of the projected image.
4. Align the test pattern on the screen by selecting each co-ordinate in turn and
moving the corner of the projected image.
5. Continue this process until the cross hatch pattern fits the screen and the
central area of overlapping pattern is accurately superimposed and the
pattern in this area is white.
Note that in ‘4 Corner’ warp alignment the screen must be flat and
rectangular. This is important as linearity is automatically maintained
between the corners and accurate alignment in the central area is
only possible when the shape produced is a rectangle.
You can check if your alignment is correct by changing both processor test patterns
to the ‘Aspect Test’ pattern
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